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US1289434A - Valve. - Google Patents

Valve. Download PDF

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Publication number
US1289434A
US1289434A US10064216A US10064216A US1289434A US 1289434 A US1289434 A US 1289434A US 10064216 A US10064216 A US 10064216A US 10064216 A US10064216 A US 10064216A US 1289434 A US1289434 A US 1289434A
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Prior art keywords
valve
bonnet
wall
port
casing
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US10064216A
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Weston M Fulton
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Fulton Co
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Fulton Co
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00Spindle sealings
    • F16K41/02Spindle sealings with stuffing-box ; Sealing rings
    • F16K41/04Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
    • F16K41/043Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing for spindles which only rotate, i.e. non-rising spindles

Definitions

  • This invention relates to valves, and has for its object to provide a valve of the packless type, or one in which the packing for the valve stem is replaced by a flexible wall, with means for permitting regrinding of the valve disk on its seat without disturbing the flexible wall or disconnecting the valve casing from its pipe connections.
  • My invention overcomes the above objections and resides in providing a valve of the type above referred to with means for locking the flexible wall and the valve-operating member a-gainst relative movement, thereby enabling turning movement of the valve disk on its seat without danger kof twisting and injuring the flexible wall. Grinding can also be effected without disturbing the assembled parts of the valve and without removal of the valve from its connections.
  • Figure 1 is a view in longitudinal vertical section showing a valve embodying my improvement.
  • Figs. 2 and 3 are detail views
  • Fig. 4 is a view in vertical section showing a modification of my invention.
  • Fig. 1 shows a globe valve in which 1 is the valve casing having a threaded inlet-connection 2 and a corresponding outlet 3, and having an externally threaded side extension 4.
  • a partition wall 5 between the inlet and outlet is provided with a valve-controlled opening or port 6 in alinement with the opening of said side extension.
  • the valve 7 and its associated elements are supported on abonnet 8 which .is secured to the extension in any suitable manner, such as by means of a ledge 9 resting on the end of the extension' 4 and held in place by an annular ring nut 10 engaging the threads on the extension 4.
  • the valve stem consists of two parts, an interiorly threaded cylindrical stem portion 11 preferably havinga left-hand thread and provided with hand-operated means for rotating it, such as a wheel 12, and a part 13 having a threaded engagement with its companion member.
  • an interiorly threaded cylindrical stem portion 11 preferably havinga left-hand thread and provided with hand-operated means for rotating it, such as a wheel 12, and a part 13 having a threaded engagement with its companion member.
  • the end closure 14 of a flexible. corrugated cylindrical wall 15 which constitutes the leak-preventing septum or member.
  • the upper end of this wall is provided with a flanged portion 16 adapted to rest on the lupper edge of the bonnet 8 and which is preferably reinforcedby an extra flange 17 as described and claimed in my U. S. Patent No. 1,167,895, dated January 11, 1916.
  • a guide plate 18 having a rectangular opening receives the squared portion -of the stem 13 to prevent the latter from rotating when the upper stem 11 is rotated, and also serves as a support for a spring disk 19, see Fig. 3, which yieldingly presses a flanged portion 20 on the stem 1l against a clamping nut 21 which engages the externally-threaded end of the bonnet 8.
  • This nut is also adapted to clamp between itself and the end of the bonnet the flanged end of the flexible corrugated wall and the associated extra flange 17 and guide plate 18, thereby making a tight joint.
  • the valve 7 may be connected with the end closure 14 in any suitable manner which will permit it to be detachably connected thereto and prevent its rotation with respect thereto.
  • the valve disk is provided with parallel bosses 22.
  • the inner walls of these bosses are undercut to form retaining ledges 23 for engaging -a head 24 formed on a neck 25 extending from a projection 26 on the end closure 14.
  • This neck is provided with parallel sides which enter the slot formed by the bosses and prevent the. disk from turning on its support.
  • a Apin 27 passes through the bosses and retains the disk as shown.
  • I provide means for locking the valve stem, and flexible wall against relative angular displacement during regrinding.
  • I preferably provide a set screw 28 adapted to engage in a depression 29 in the side of the valve stemy 11, thus locking the rotary part of the valve stem to the bonnet 8, and
  • I preferably employ a cup-shaped member or shield 30 adapted lto telescope within the bonnet 8 and provided with a slot 31 engaging a pin 32 on the bonnet. This cup member is secured to the closure 26 by a nut 33, and
  • the device thus far described operates in the following manner: Assume the parts have been assembled and the valve is located in a pipe system. By reason of wear durin use, the valve 7 requires regrinding. Without removing the valve from the pipe system, ring nut 10 is first slightly loosened. Hand wheel 12 is given a righthand turn to seat valve 7, and set-screw 28 is run into its socket 29. The rotatable valve-operating member 11 Iis now held 'against rotation with respect to the bonnet 8. Ring nut 10 is now dlsengaged and the assembled valve parts are removed.
  • An abrasive mlxture such as oil and emery, 1s
  • a clampnut 21 is provided with an extension 34 on which rests the hub lof the hand wheel 12.
  • This extension is provided with oppositely disposed openings 35 which are adapted to register with an opening 36 in the rotatable valve stem 11.
  • a valve casing having a valve-seat port, a valve for controlling the same, a tubular flexible wall having connec- .tion with said valve, a bonnet member for housing said flexible wall detachably connected with said casing, rotatable means for moving said valve to open and close said port, means for rotating the same, 'and means for locking said rotatable means and said flexible wall against angular displace ment withrespect to each other.
  • avalve casing a bonnet detachably secured thereto, a partition in said casing having a valve-seat .port in axial alinement with the axis of the bonnet, a flexible corrugated tubular wall having one end secured to the bonnet and-having its opposite end movable and provided with a tensible corrugated wall, means for securing one end of said wall to said bonnet, a closure for the opposite end of said wall, a valve adapted to open and close said port and connected to valve-operating stem consisting of a rotatable member held in position on said bonnet and a reciprocating member having a threaded engagement with said rotatable member, means for locking said rotatable member to said bonnet, and means for holding said corrugated wall against angular displacement with respect to said bonnet.
  • valve casing having a valve-seat port, a bonnet detachably connected to said casing, a flexible corrugated wall having one end Secured to said bonsaid closure, a two-party net and its opposite end movable and provided With a closure, a valve mounted on said closure and'adapted to open and close said port, a cup shield secured to said closure and sliding in said bonnet, means restraining said shield from rotary movement in relation to the bonnet, rotatable means for operating said valve, and means for locking said means against angular movement with respect to said flexible Wall.
  • valve casing having a valve-seat port, a bonnet detachably connect-l ed to said casing the axis of which is in alinement with said port, a flexible corrugated tubular Wall having one end secured to said lbonnet and having its opposite end movable and provided with a closure, a valve connected to said closure for controlling said port, rotatable means adapted to move the valve into and out of seating position, means restricting the movements of said closure and corrugated Wall toa rectilinear path, and means for locking said rotatable means against rotation With respect to said bonnet.
  • a valve casing having a valve-seat port, a bonnet detachably connected to said casing, a collapsible and extensible tubular Wall having at one end a closure to which a valve is attached to control said port and at its opposite end a flange portion adapted to be supported by the bonnet, a plate having a rectangular opening, a clampnut for securing the edges of said plate and flange to said bonnet, a two-part valve stem for operating said valve consisting of a rotatable member held in yielding engagement with said clamp-nut and a rectangular reciprocating member Working through said rectangular opening and having a threaded engagement with said rotatable member, said reciprocating member being connected to said end closure, means for locking said rotatable member to said bonnet, and means confining the movements of said end closure and tubular Wall to a rectilinear path.
  • valve casing having a valve-seat port, a bonnet detachably connected to said casing, a collapsible and extensible tubular Wall having at one end a closure to which a valve is attached to control said port and at its opposite end a flange portion adapted to be supported by the bonnet, a
  • ' plate having a rectangular opening, a clampnut for securing the edges of said plate and flange to said bonnet, a twofpart valve stem ⁇ for operating said valve consisting of a rotatable member held in yielding engagement with said clamp-nut and a rect-angular reciprocating member Working through said rectangular opening and having a threaded engagement with said rotatable member, said reciprocating member being connected to said end closure, means Jfor locking said rotatable member to said bonnet, and a cup shield secured to said closure and sliding in said bonnet, said cup-shield having a slot and pin engagement With said bonnet to confine the movement of said end closure and tubular Wall to a rectilinear path.
  • valve casing having a valve-seat port, a valve for controlling the same, a bonnet detachably connected to said casing, a flexible Wall connected to said bon ⁇ net and valve, rotatable means for moving said valve to open and close said port, means for rotating the same, and means for locking said valve, rotatable means and bonnet against angular movement with respect to each other.
  • valve casing having a valve-seat port, a valve for controlling the same, a bonnet detachably connected to said casing, a flexible tubular Wall connected to said bonnet and valve, rotatable means for movingvsaid valve to open and close said port, means for rotating the same, and means for locking said rotatable means and said bonnet against angular movement with respect to each other.
  • valve casing having a valve-seat port, a bonnet detachably connected to said casing, a flexible Wall connected to said bonnet, a valve carried by said flexible Wall and adapted to open and close said port, a two-part valve-operating stem consisting of a rotatable member and a reciprocating member having a threaded engagement With said rotatable member and operatively connected to said valve, and means for locking said rotatable member to said bonnet.
  • valve casing having a valve-seatl port, a bonnet detachably connected to said casing, a tubular flexible Wall connected to said bonnet and provided With a movable end closure, a valve carried by said end lclosure and adapted to open and close said port, a two-part valve-operating' stem consisting of a rotatable member and a reciprocating member having a threaded engagement With said rotatable member and operatively connected to said end closure, means for holding said tubular Wall against rotary movement With respect to said bonnet, and means for locking said rotatable member to said bonnet.
  • valve casing having a valve-seat port, a bonnet detachably connected to'said casing, a tubular flexible Wall connected to said bonnet and provided With a movable end closure, a valve carried by said end closure and adapted to open and close said port, a two-part valve-operating stem consisting of a rotatable member and a reciprocating member having a threaded engagement with said rotatable member and operatively connected to said end closure, a recilineally movable -mentber carried by: said end closure and sliding in said bonnet, means for preventing relative rotary move- CJI ment of ⁇ Said lectilineally movable member and bonnet, und means for locking said rotatable. member to said bonnet.
  • a valve easing having a valve-seat port, L bonnet detachnbly connected to saidcaSing, a tubular flexible wall connected to said bonnet and provided with a movable end closure, a valve carried by said end closure, means for operating said valve t0 open and close said port, a onp- 10 shaped shield carried by said end closure v and sliding in said bonnet, and means to In testimony whereof I have signed this 15 specification.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)

Description

W. M. FULTON.
VALVE.
APPLICATION FILED MAY 29, 1816.
Patented Dec. 31, 1918.
LQBQAS@ WESTON M. FULTON, F KN OXVILLE, TENNESSEE, ASSIGNOR TO THE FULTON COMPANY 0F KNOXVILLE, TENNESSEE, A CORPORATION 0F MAINE.
VALVE.
Specification of Letters Patent.
Patented Deo. 31, 1918.
Application led May 29, 1916. Serial No. 100,642.
To all who-m it may concern:
Be it known that I, WESTON M. FULTON, aV citizen of the United States of' America,
and a resident of Knoxville, Tennessee, have invented a new and useful Improvement in Valves, which invention isfully set forth in the following specification.
This invention relates to valves, and has for its object to provide a valve of the packless type, or one in which the packing for the valve stem is replaced by a flexible wall, with means for permitting regrinding of the valve disk on its seat without disturbing the flexible wall or disconnecting the valve casing from its pipe connections.
As heretofore constructed, hand-operated valves employing a flexible wall around the valve stem for preventing leaks present disadvantages when the valve disk requires regrinding. The mechanical construction of these valves is such that they are not readily taken apart. They have been assembled tightly with a view to preventing leaks and `to avoid the disadvantages of repacking.
To attempt. to regrind the valve disk without disconnecting the assembled partshas resulted in' subjecting the flexible wall, which for` ordinary valves is thin, to torsional strains which have injured the flexible wall and defeated its purpose.
My invention overcomes the above objections and resides in providing a valve of the type above referred to with means for locking the flexible wall and the valve-operating member a-gainst relative movement, thereby enabling turning movement of the valve disk on its seat without danger kof twisting and injuring the flexible wall. Grinding can also be effected without disturbing the assembled parts of the valve and without removal of the valve from its connections. v
This improvement may be embodied in a variety of mechanical expressions, two of which are herein described in detail by way of example and are illustrated on the accompanying drawings, which are intended to assist the description and are not intended to define the limits of the invention.
Figure 1 is a view in longitudinal vertical section showing a valve embodying my improvement.
Figs. 2 and 3 are detail views, and
Fig. 4 is a view in vertical section showing a modification of my invention.
Referring to the drawings, Fig. 1 shows a globe valve in which 1 is the valve casing having a threaded inlet-connection 2 and a corresponding outlet 3, and having an externally threaded side extension 4. A partition wall 5 between the inlet and outlet is provided with a valve-controlled opening or port 6 in alinement with the opening of said side extension. The valve 7 and its associated elements are supported on abonnet 8 which .is secured to the extension in any suitable manner, such as by means of a ledge 9 resting on the end of the extension' 4 and held in place by an annular ring nut 10 engaging the threads on the extension 4. The valve stemconsists of two parts, an interiorly threaded cylindrical stem portion 11 preferably havinga left-hand thread and provided with hand-operated means for rotating it, such as a wheel 12, and a part 13 having a threaded engagement with its companion member. To the lower end of the stem 13 is connected the end closure 14 of a flexible. corrugated cylindrical wall 15 which constitutes the leak-preventing septum or member. The upper end of this wall is provided with a flanged portion 16 adapted to rest on the lupper edge of the bonnet 8 and which is preferably reinforcedby an extra flange 17 as described and claimed in my U. S. Patent No. 1,167,895, dated January 11, 1916. A guide plate 18 having a rectangular opening receives the squared portion -of the stem 13 to prevent the latter from rotating when the upper stem 11 is rotated, and also serves as a support for a spring disk 19, see Fig. 3, which yieldingly presses a flanged portion 20 on the stem 1l against a clamping nut 21 which engages the externally-threaded end of the bonnet 8. This nut is also adapted to clamp between itself and the end of the bonnet the flanged end of the flexible corrugated wall and the associated extra flange 17 and guide plate 18, thereby making a tight joint.
The valve 7 may be connected with the end closure 14 in any suitable manner which will permit it to be detachably connected thereto and prevent its rotation with respect thereto. In the drawings the valve disk is provided with parallel bosses 22. For a part of their length the inner walls of these bosses are undercut to form retaining ledges 23 for engaging -a head 24 formed on a neck 25 extending from a projection 26 on the end closure 14. This neck is provided with parallel sides which enter the slot formed by the bosses and prevent the. disk from turning on its support. A Apin 27 passes through the bosses and retains the disk as shown.
To enable the valve disk tobe reground without disturbing the assembled parts or twisting the flexible corrugated wall, I provide means for locking the valve stem, and flexible wall against relative angular displacement during regrinding. To this end I preferably provide a set screw 28 adapted to engage in a depression 29 in the side of the valve stemy 11, thus locking the rotary part of the valve stem to the bonnet 8, and
rovide the movable end of the tubular flexile wall 15 with a guide for confining themovements of the tubular Wall to al rectilinear path. Forthis purpose I preferably employ a cup-shaped member or shield 30 adapted lto telescope within the bonnet 8 and provided with a slot 31 engaging a pin 32 on the bonnet. This cup member is secured to the closure 26 by a nut 33, and
serves both as -a closure against the action of fluid streams -erodingthe thin walls of the leak-preventing septum andas a means for holding the latter against twisting when the valve disk is reground on its seat.
The device thus far described operates in the following manner: Assume the parts have been assembled and the valve is located in a pipe system. By reason of wear durin use, the valve 7 requires regrinding. Without removing the valve from the pipe system, ring nut 10 is first slightly loosened. Hand wheel 12 is given a righthand turn to seat valve 7, and set-screw 28 is run into its socket 29. The rotatable valve-operating member 11 Iis now held 'against rotation with respect to the bonnet 8. Ring nut 10 is now dlsengaged and the assembled valve parts are removed.
applied to thel valve 7 and valve seat, and the valve replaced and ground to properly fit its seat, after which the valve and its seat are cleaned from all grit and the parts secured in position by ring nut 10. During the operation of regrinding it will be noted that/rotary movement of the hand wheel is transmitted to the valve disk 7 through nut 21, made fast to stem 11 by lset screw 28, and through bonnet 8 and its connection with the valve disk through the cup-shield 30 and the end closure of the flexible corrugated wall, which corrugated wall is entirely relieved from twisting strains. 4
An abrasive mlxture, such as oil and emery, 1s
memes In Fig. 4 I have shown a slight modifica.
tion of the manner of locking the rotatable valve-operating member to the bonnet. In this modification a clampnut 21 is provided with an extension 34 on which rests the hub lof the hand wheel 12. This extension is provided with oppositely disposed openings 35 which are adapted to register with an opening 36 in the rotatable valve stem 11. When 1t is desired to lock the stem to the bonnet, the opening in the stem is turned into registry with the openings in the extension and a pinyis inserted. In this modified construction 'the spring disk 19 appearing in Fig. 1 is omitted, since the valve stem is supported on the upper end of the extension 34. In other respects the construction is the same as that first described, @and operates in the same manner.
What is claimed is 1. In combination, a valve casing having a valve-seat port, a valve for controlling the same, a tubular flexible wall having connec- .tion with said valve, a bonnet member for housing said flexible wall detachably connected with said casing, rotatable means for moving said valve to open and close said port, means for rotating the same, 'and means for locking said rotatable means and said flexible wall against angular displace ment withrespect to each other.
2. In combination, avalve casing, a bonnet detachably secured thereto, a partition in said casing having a valve-seat .port in axial alinement with the axis of the bonnet, a flexible corrugated tubular wall having one end secured to the bonnet and-having its opposite end movable and provided with a tensible corrugated wall, means for securing one end of said wall to said bonnet, a closure for the opposite end of said wall, a valve adapted to open and close said port and connected to valve-operating stem consisting of a rotatable member held in position on said bonnet and a reciprocating member having a threaded engagement with said rotatable member, means for locking said rotatable member to said bonnet, and means for holding said corrugated wall against angular displacement with respect to said bonnet.
4. In combination, a valve casing having a valve-seat port, a bonnet detachably connected to said casing, a flexible corrugated wall having one end Secured to said bonsaid closure, a two-party net and its opposite end movable and provided With a closure, a valve mounted on said closure and'adapted to open and close said port, a cup shield secured to said closure and sliding in said bonnet, means restraining said shield from rotary movement in relation to the bonnet, rotatable means for operating said valve, and means for locking said means against angular movement with respect to said flexible Wall.
5. In combination, a valve casing having a valve-seat port, a bonnet detachably connect-l ed to said casing the axis of which is in alinement with said port, a flexible corrugated tubular Wall having one end secured to said lbonnet and having its opposite end movable and provided with a closure, a valve connected to said closure for controlling said port, rotatable means adapted to move the valve into and out of seating position, means restricting the movements of said closure and corrugated Wall toa rectilinear path, and means for locking said rotatable means against rotation With respect to said bonnet.
6. In combination, a valve casing having a valve-seat port, a bonnet detachably connected to said casing, a collapsible and extensible tubular Wall having at one end a closure to which a valve is attached to control said port and at its opposite end a flange portion adapted to be supported by the bonnet, a plate having a rectangular opening, a clampnut for securing the edges of said plate and flange to said bonnet, a two-part valve stem for operating said valve consisting of a rotatable member held in yielding engagement with said clamp-nut and a rectangular reciprocating member Working through said rectangular opening and having a threaded engagement with said rotatable member, said reciprocating member being connected to said end closure, means for locking said rotatable member to said bonnet, and means confining the movements of said end closure and tubular Wall to a rectilinear path. i
7. In combination, a valve casing having a valve-seat port, a bonnet detachably connected to said casing, a collapsible and extensible tubular Wall having at one end a closure to which a valve is attached to control said port and at its opposite end a flange portion adapted to be supported by the bonnet, a
' plate having a rectangular opening, a clampnut for securing the edges of said plate and flange to said bonnet, a twofpart valve stem `for operating said valve consisting of a rotatable member held in yielding engagement with said clamp-nut and a rect-angular reciprocating member Working through said rectangular opening and having a threaded engagement with said rotatable member, said reciprocating member being connected to said end closure, means Jfor locking said rotatable member to said bonnet, and a cup shield secured to said closure and sliding in said bonnet, said cup-shield having a slot and pin engagement With said bonnet to confine the movement of said end closure and tubular Wall to a rectilinear path.
8. In combination, a valve casing having a valve-seat port, a valve for controlling the same, a bonnet detachably connected to said casing, a flexible Wall connected to said bon `net and valve, rotatable means for moving said valve to open and close said port, means for rotating the same, and means for locking said valve, rotatable means and bonnet against angular movement with respect to each other.
9. In combination, a valve casing having a valve-seat port, a valve for controlling the same, a bonnet detachably connected to said casing, a flexible tubular Wall connected to said bonnet and valve, rotatable means for movingvsaid valve to open and close said port, means for rotating the same, and means for locking said rotatable means and said bonnet against angular movement with respect to each other.
10.l In combination, a valve casing having a valve-seat port, a bonnet detachably connected to said casing, a flexible Wall connected to said bonnet, a valve carried by said flexible Wall and adapted to open and close said port, a two-part valve-operating stem consisting of a rotatable member and a reciprocating member having a threaded engagement With said rotatable member and operatively connected to said valve, and means for locking said rotatable member to said bonnet.
11. In combination, a valve casing having a valve-seatl port, a bonnet detachably connected to said casing, a tubular flexible Wall connected to said bonnet and provided With a movable end closure, a valve carried by said end lclosure and adapted to open and close said port, a two-part valve-operating' stem consisting of a rotatable member and a reciprocating member having a threaded engagement With said rotatable member and operatively connected to said end closure, means for holding said tubular Wall against rotary movement With respect to said bonnet, and means for locking said rotatable member to said bonnet.
12. In combination, a valve casing having a valve-seat port, a bonnet detachably connected to'said casing, a tubular flexible Wall connected to said bonnet and provided With a movable end closure, a valve carried by said end closure and adapted to open and close said port, a two-part valve-operating stem consisting of a rotatable member and a reciprocating member having a threaded engagement with said rotatable member and operatively connected to said end closure, a recilineally movable -mentber carried by: said end closure and sliding in said bonnet, means for preventing relative rotary move- CJI ment of `Said lectilineally movable member and bonnet, und means for locking said rotatable. member to said bonnet.
13. In combination, a valve easing having a valve-seat port, L bonnet detachnbly connected to saidcaSing, a tubular flexible wall connected to said bonnet and provided with a movable end closure, a valve carried by said end closure, means for operating said valve t0 open and close said port, a onp- 10 shaped shield carried by said end closure v and sliding in said bonnet, and means to In testimony whereof I have signed this 15 specification.
WESTON M. FULToN.
US10064216A 1916-05-29 1916-05-29 Valve. Expired - Lifetime US1289434A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540298A (en) * 1945-07-04 1951-02-06 Lambert Q Seng Valve
US2615468A (en) * 1947-05-16 1952-10-28 Reconstruction Finance Corp Diaphragm controlled valve with bellows type seal
US2832372A (en) * 1954-02-01 1958-04-29 Victor W Farris Safety valve having shielded sealing member
US2852283A (en) * 1954-02-12 1958-09-16 Spence Paulsen Valve
US2945510A (en) * 1957-09-10 1960-07-19 Jones Barton Valve release for differential pressure responsive devices
US3905246A (en) * 1974-06-05 1975-09-16 Illinois Tool Works Construction and method for forming a plunger seal
US4240610A (en) * 1979-05-23 1980-12-23 Eg & G Sealol, Inc. High pressure bellows assembly
EP0051975A1 (en) * 1980-11-07 1982-05-19 David Baram A valve

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540298A (en) * 1945-07-04 1951-02-06 Lambert Q Seng Valve
US2615468A (en) * 1947-05-16 1952-10-28 Reconstruction Finance Corp Diaphragm controlled valve with bellows type seal
US2832372A (en) * 1954-02-01 1958-04-29 Victor W Farris Safety valve having shielded sealing member
US2852283A (en) * 1954-02-12 1958-09-16 Spence Paulsen Valve
US2945510A (en) * 1957-09-10 1960-07-19 Jones Barton Valve release for differential pressure responsive devices
US3905246A (en) * 1974-06-05 1975-09-16 Illinois Tool Works Construction and method for forming a plunger seal
US4240610A (en) * 1979-05-23 1980-12-23 Eg & G Sealol, Inc. High pressure bellows assembly
EP0051975A1 (en) * 1980-11-07 1982-05-19 David Baram A valve
US4553564A (en) * 1980-11-07 1985-11-19 David Baram Valve

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